TY - JOUR N2 - 7N01-T4 aluminum alloy was welded by metal inert gas welding and the influence of V-groove angle on joint fatigue properties was investigated. The results indicate that the volume of fusion zone (FZ) and the grains in FZ become small when the groove angle decreases to 50° from 70°. Most pores distribute at the FZ edge and fewer pores are formed in the small angle joint. The fatigue crack mainly initiates at the transition region between the weld passes due to the pore concentration. The small angle contributes to increasing joint fatigue properties, especially at the low stress level. The fatigue strength of 50° joint is 103.06 MPa which is 15.3% higher than that of 70°joint. L1 - http://www.czasopisma.pan.pl/Content/113617/PDF/AMM-2019-4-48-Lin.pdf L2 - http://www.czasopisma.pan.pl/Content/113617 PY - 2019 IS - No 4 EP - 1584 DO - 10.24425/amm.2019.130129 KW - 7N01-T4 aluminum alloy KW - MIG welding KW - V-groove angle KW - Fatigue KW - Fracture A1 - Ma, Zhongwei A1 - Li, Qinghua A1 - Ma, Lin A1 - He, Zhaokun A1 - Liang, Zhimin PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 64 DA - 2019.12.12 T1 - Fatigue Behavior of MIG-Welded 7N01-T4 Aluminum Alloy with Different V-Groove Angles SP - 1577 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/113617 T2 - Archives of Metallurgy and Materials ER -